Projects
This page shows the 219 projects that have been approved to run in OpenSAFELY.
Projects numbered 1-155 were approved during the COVID-19 pandemic under legal powers issued by the Secretary of State: Regulation 3(4) of the Health Service (Control of Patient Information) Regulations 2002 – COPI Regulations. Under this emergency legal power, the Type 1 Opt-out [archived here] (which a patient can register with their GP surgery to prevent their GP data from being shared outside the GP practice for planning or research purposes) was not required to be upheld for research and planning purposes in the pandemic. Therefore, for projects 1-155 a patient who had registered a Type 1 Opt-out could have had their GP health information used (anonymously) in these projects.
In June 2023, the legal basis for OpenSAFELY’s operation changed [archived here] from the emergency COPI Regulations to the COVID-19 Public Health Directions 2020. Under this Direction, the Type 1 Opt-out will be upheld for all new projects (after 155).
In June 2025, the government issued new Directions that make it possible to conduct research on any healthcare topic. As such, projects after number 205 are not confined to COVID-19 studies and cover a wide range of health topics.
OpenSAFELY Projects
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Project #11: Assessing the impact of COVID-19 on antidepressant prescribing
Service evaluation project run by NHS England and NHS Improvement.
COVID-19 -
Project #10: Monitoring service use for CVD pathways, blood pressure tests taken, corresponding reading, and medical prescription across geographical deprivation and ethnic groups
Service evaluation project run by NHS England and NHS Improvement.
COVID-19 -
Project #9: What are the patterns of healthcare use in children and young people with SARS-CoV-2 in the 12 months following infection?
Research project run by ISARIC.
COVID-19 -
Project #8: Examining the effects of randomising dissemination of the Germ Defence website via GP practices on rates of respiratory infection, including COVID-19 and seasonal flu
Research project run by University of Bristol.
COVID-19 -
Project #5: Impact of the COVID pandemic on FIT (stool) testing
Service evaluation project run by Royal Devon & Exeter NHS Foundation Trust and University of Exeter.
COVID-19 -
Project #4: The effectiveness of COVID-19 vaccines against clinical outcomes: a test negative case control study using OpenSAFELY
Research project run by University of Nottingham.
COVID-19 -
Project #3: Vaccine Regression Discontinuity
Research project run by University of Bristol.
COVID-19 -
Project #2: Online consultations
Service evaluation project run by NHSX.
COVID-19 -
Project #1: Vaccine Eligibility
Audit project run by NHSX.
COVID-19